Stitch-doubling device and points therefor



L. N. D. WILLIAMS. STITCH DQUBLING DEVICE AND POINTS THEREFOR.

APPLICATTON FILED DEC.13 T919- Patented Aug. 23, 1921 CHM UNITED. STATES PATENT OFFICE.

STITCH-DOUBLING DEVICE AND POINTS THERFIFOR.

Specification of Letters Patent.

Patented Aug. 23, 1921.

Application filed December 13, 1919. Serial No. 344,632.

To all whom it may concern Be it known that I, LoUIs N. D. WIL- LrAMs, a citizen of the United States, residing in Ogontz, Pennsylvania, have invented certain Improvements in Stitch- Doubling Devices and Points Therefor, of which the following is a specification.

My invention consists in certain improvements in the stitch-receiving and doubling device forming the subject-matter of U. S. Letters Patent No. 1,068,853, granted July 29, 1913, to myself and Walter D. Butz, as assignees of the said Walter D. Butz.

The patented device comprises, broadly, a split ring each half of which is equipped with semi-circular series of stitch-receivingpoints or quills, the said halves being hinged together so that they may be swung into position to bring the points or quills of the two series together, point to point, in order to permit the stitches carried by the points or quills of one series being doubled with the stitches carried by those of the other series. In carrying out this operation, the stitches carried by the terminal or end points or quills of each series are so stretched that they tend to either break or slip from the points or quills during the swing of the halves of the ring. In the patented device the slipping tendency was overcome by means of pins which were projected into the web and retained the stitches in place. This method, however, has proven objectionable inasmuch as it necessitates manipulation of the pins and also because of the fact that the pins sometimes tear the web especially when used in connection with fine gage web knitted of light and thin yarn. The object of my present invention is to so construct the terminal points or quills, hereinafter, for convenience, referred to simply as points that each will, in itself, so hold the stitch carried by it as to prevent accidental dislodgment of the same and, at the same time, permit relief of the tension to which the fabric is subjected when the halves of the ring are folded together, thereby preventing breakage of stitches. This object I accomplish in the manner hereinafter set forth, reference being had to the accompanying drawing, in which Figure 1 is an inverted plan view of a stitch receiving and doubling ring having terminal points constructed in accordance with my invention;

Fig. 2 is a side view of that portion of the ring adjacent a hinge showing the terminal points of each series;

Fig. 3 is a side elevation, on a larger scale, of one of the terminal points shown in Fig. 2;

Figs. 4, 5 and 6 are views similar to Fig. 3' but showing points embodying modifications of my invention;

Fig. 7 is a transverse sectional view on the line 77, Fig. 3;

Fig. 8 is a transverse sectional view on the line 8-8, Fig. 4;

Fig. 9 is a transverse sectional view on the line 9-9, Fig. 5;

Fig. 10 is a transverse sectional view on the line 1010, Fig. 6, and

Fig. 11 is a view similar to Figs. 7, 8 and 9 but illustrating another modification of my invention.

In Figs. 1 and 2 is shown a ring composed of semi-circular halves 1 and 1* united by means of hinges 2. The half 1 is provided with a series of stitch-receiving points 3 and the half 1 is similarly provided with a corresponding series of points 3. The terminal point-s 3 of the series of points 3 and the terminal points 3 of the series of points 2* are the ones to which my inventtion is directed. It is the stitches on these terminal points that are stretched and tend to break or slip when one half of the ring is folded over in respect to the other half and this tendency I overcome by constructing each terminal point in the manner best shown in Fig. 2, wherein it is seen that the terminal points 3 and 3 are provided at their outer or stitch receiving ends with notches 4. These notches, it will be noticed, are on the sides of the points away from the line of division of the split ring. When the halves of the ring are folded together, the stitches carried by the terminal points slip into the notches and accidental dislodgment is thereby prevented. At' the same time. strain upon the stitches is materially relieved as the halves of the ring are being folded and danger of breakage of the stitches is prevented.

WVhen the notches are intended merely to prevent dislodgment of the stitches and the yarn of which the. fabric is knitted. is sufficiently strong in itself to be proof against breakage, it is not necessary that the notches be positioned on the sides of the points away from the line of division of the ring.

For instance, in Figs. 4 and S is shown a point with outside notches, and in Figs. 5 and 9 is shown a point with an inside notch. Figs. 6 and 10 show a'point 3" of circular form with a side notch which, under certain conditions, may be used.

Fig. 11 illustrates a point having both front and side notches, this type being especially adapted for use with very fine fabric wherein it is necessary to secure the greatest possible relief of tension during the fold ing of the halves of the ring. This type, as will be observed, combines the two forms shown in Figs. 7 and 8.

While I have shown only the terminal points of each series as being of special stitch-retaining and tension-relieving construction it is obvious that a group of points at each end of each series could be of such construction, or, if desired, the ring might be equipped throughout with such points. The actual number best to utilize must be determined in each case by local conditions, such, for instance, as the size, tension, etc, of thestitches I claim:

1. A split ring having points for receiving and doubling stitches of knitted web, the points adjacent the divisions of said ring each being provided with a notch adapted to receive and retain against acci-- dental dislodgment the stitch carried by said point. V

2. A. split ring having points for receiving and doubling stitches of knitted Web,

the points adjacent the divisions of said ring each being provided, on that side away from the division of the ring, with anotch adapted to receive the stitch. carried by said point. 7 I

In testimony whereof I have signed my name to this specification.

LOUIS N. 1). WILLIAMS. 

